package thread;

import java.text.SimpleDateFormat;
import java.util.Date;

//模拟倒计时
public class TestSleep02 implements Runnable{
    @Override
    public void run() {

    }

    public static void tenDown() throws InterruptedException {
        int num = 10;

        while (true){
            Thread.sleep(1000);
            System.out.println(num--);
            if(num<=0){
                break;
            }
        }


    }

    public static void main(String[] args) {
        /*try {
            TestSleep02.tenDown();
        }catch (InterruptedException e) {
            e.printStackTrace();
        }*/

        Date currentTime = new Date(System.currentTimeMillis());
        while (true){
            try {
                Thread.sleep(1000);
                System.out.println(new SimpleDateFormat("HH:mm:ss").format(currentTime));
                currentTime = new Date(System.currentTimeMillis());
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

    }
}
